Metal detector



FIG. 1 shows a perspective view of a metal detector.

FIG. 2 shows a right side elevation view thereof.

FIG. 3 shows a left side elevation view thereof.

FIG. 4 shows a front elevation view thereof.

FIG. 5 shows a rear elevation view thereof.

FIG. 6 shows a top elevation view thereof; and,

FIG. 7 shows a bottom elevation view thereof.

The broken lines depict portions of the metal detector that form no part of the claimed design. 

CLAIM The ornamental design for a metal detector, as shown and described. 